MikeC is right, your herd bull should compliment your cows in an effort to get YOUR ideal calf for YOUR ideal market.
When we bought our herd bull, he was and still is almost a frame score short. But the majority of our herd is taller than average. He also has a pretty straight leg and a good square hip, IMO. Our cows tend to fall off in the rump and carry a set to their leg. I feel he compliments our cows real well judging by the few calves we have out of him so far.
Also keep in mind where you plan to market your animals. Horns are frowned on in this are, so I flunked that part of the test.
RWF are discounted also.
The size of cow I prefer? I like them 1500. Hubby wants them smaller. We have a few that tip the ton mark when heavy with calf. IMO size of cow varies with breed, environment, ect... Big cows eat more. The same frame angus might weigh less that the same frame, bigger boned herf.
I'll shut up now